25ed4 - Revision history

MisterShafXen at 16:22, 26 May 2026

2026-05-26T16:22:24Z

← Older revision		Revision as of 16:22, 26 May 2026
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	~~{{todo\|review\|comment=See if there’s a better way to reword the theory section’s contents, they’re a bit confusing & unclear\|inline=1}}~~

	{{Infobox ET}}		{{Infobox ET}}
	'''25ed4''' is the [[Ed4\|equal division of the double octave]] into 25 parts of exactly 96 [[cent\|cents]] each (every second step of [[25edo]]). It corresponds to 12.5edo and is notable as a type of compressed [[12edo]].		'''25ed4''' is the [[Ed4\|equal division of the double octave]] into 25 parts of exactly 96 [[cent\|cents]] each (every second step of [[25edo]]). It corresponds to 12.5edo and is notable as a type of compressed [[12edo]].

2026-05-26T16:22:07Z

← Older revision		Revision as of 16:22, 26 May 2026
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	== Theory ==		== Theory ==
	~~We could have~~ 12edo ~~with~~ a ~~quarter note~~, ~~like with 1~~.~~5edo~~, ~~where~~ the ~~2nd note~~ is ~~the same as the 3rd in 4edo or we could squish the notes~~ and ~~fit~~ in ~~something else~~.		On the surface, 25ed4 seems fairly similar to [[12edo]]. Its step is 96¢, its perfect 5th is actually quite flat at 672¢ (but still 7 steps), but it has an excellent [[5/4]] at 4 steps (384¢). However, try to map this to a 12edo keyboard and you will run into multiple issues. First, the octave is WAY out. 12\25ed4 is 1152¢. Second, the best fifth of 25edo is only found up an octave. Third, 24≠25, so double octaves don't work unless you use some isomorphic keyboard.

			Here are some important ratios and their relative errors in 25ed4.

			3/1: 18.8%

			3/2: -31.2%

			4/3: -18.8%

			5/4: -2.4%

	== Intervals ==		== Intervals ==

2024-10-05T02:35:36Z

Intervals harmonics todo

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 {{Infobox ET}}
 '''25ed4''' is the [[Ed4|equal division of the double octave]] into 25 parts of exactly 96 [[cent|cents]] each (every second step of [[25edo]]). It corresponds to 12.5edo and is notable as a type of compressed [[12edo]].
@@ Line 4: / Line 6: @@
 == Theory ==
 We could have 12edo with a quarter note, like with 1.5edo, where the 2nd note is the same as the 3rd in 4edo or we could squish the notes and fit in something else.
 {{stub}}

2024-03-02T00:09:37Z

← Older revision		Revision as of 00:09, 2 March 2024
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	{{Infobox ET}}		{{Infobox ET}}
	'''25ed4''' is the [[Ed4\|equal division of the double octave]] into 25 parts of exactly 96 [[cent\|cents]] each (every second step of [[25edo]]).		'''25ed4''' is the [[Ed4\|equal division of the double octave]] into 25 parts of exactly 96 [[cent\|cents]] each (every second step of [[25edo]]). It corresponds to 12.5edo and is notable as a type of compressed [[12edo]].

	== Theory ==		== Theory ==
	We could have 12edo with a quarter note, like with 1.5edo, where the 2nd note is the same as the 3rd in 4edo or we could squish the notes and fit in something else.		We could have 12edo with a quarter note, like with 1.5edo, where the 2nd note is the same as the 3rd in 4edo or we could squish the notes and fit in something else.
	{{stub}}		{{stub}}

2024-03-01T17:24:44Z

← Older revision		Revision as of 17:24, 1 March 2024
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	== Theory ==		== Theory ==
	We could have 12edo with a quarter note, like with 1.5edo, where the 2nd note is the same as the 3rd in 4edo or we could squish the notes and fit in something else.		We could have 12edo with a quarter note, like with 1.5edo, where the 2nd note is the same as the 3rd in 4edo or we could squish the notes and fit in something else.
			{{stub}}

2024-03-01T17:24:36Z

+ 12.5EDO content

← Older revision		Revision as of 17:24, 1 March 2024
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	{{Infobox ET}}		{{Infobox ET}}
			'''25ed4''' is the [[Ed4\|equal division of the double octave]] into 25 parts of exactly 96 [[cent\|cents]] each (every second step of [[25edo]]).

			== Theory ==
			We could have 12edo with a quarter note, like with 1.5edo, where the 2nd note is the same as the 3rd in 4edo or we could squish the notes and fit in something else.

2023-05-04T04:06:24Z

Created page with "{{Infobox ET}}"

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